Latch and lock



Dec. 26, 1950 A. NEWELL 2,535,947

LATCH AND LOCK Filed May 2, 1947 '2 Sheets-Sheet 1 59 R 70 s; d 69 7/ inllLlL, 7

Inventor Arthur Newel I WWW Dec.26, 1950 A. NEWELL 2,535,947

LATCH AND LOCK Filed May 2, 1947 2 Sheets-Sheet 2 Fig. 6.

u 3 \53 7677 4 6 A h 47 48 Inventor 46 Arthur Newell 3 to the edge 3 ofthe door I by means of the screws 44.

A spindle 45, which is approximately square or rectangular in crosssection, extends transversely of the side plates 4| and 42 and throughthe door I, supporting the door knobs 46 and 41 upon the opposite endsthereof, while escutcheon plates or disks 48 and 49 are disposed aboutthe spindle 45 between the outer surface of the door I and said doorknobs 46 and 41, furnishing the trim for the said door knobs.

A pair of upper and lower locking bars or fingers 50 and are pivotallysupported for vertical movement upon the pivot pins 52 and 53 betweenthe side plates 4| and 42 adjacent their inner ends which are arcuatelycurved as at 54 and 55 towards each other at their inner ends, whiletheir outer ends project through the vertically aligned openings 56 and51 formed through the face plate 43 of the housing I. The inner ends ofthe rods or wires 35 and 36 are pivotally attached to the forward endsof the locking bars or fingers 55 and 5| whereby when said fingers 55)and 5| are spread apart, the'ball latches 25 and 26 will besimultaneously projected into latched position, and when said fingers 50and 5| are moved towards each other, the ball latches 25 and 26 will beretracted to their unlatched position.

The inner edges of the fingers 50 and 5| will be notched out as at 58and 59, and will cooperate with the rockable finger operating cam 65,which in turn is actuated by the cam actuating member 6| secured uponthe square spindle 45, whereby rotation of said spindle 45 in eitherdirection will cause the member 6| to engage and operate the fingeroperating cam 88 to move the arcuate inner ends 54 and 55 of the lockingfingers 50 and 5| outwardly, thereby moving the outer ends of saidfingers 55 and 5| inwardly to unlocked position.

A locking face plate 62 having opposed locking notches 63 and 64 formedtherein, is provided with sloping opposed surfaces 65 and 65, said faceplate 62 being secured over a recess 6'! in the edge N5 of the door jam2, being held in fixed position by means of the screws 68.

' A key hole 69 is formed through the plates 4| and 42 of the lockhousing 1, whereby the forked ends 69 of the locking detent 15 which ispivoted upon the pin H and fastened by the spring 12 disposed about pin1|, will project the hooked end 13 of said detent about a pin 74disposed transversely of the slot formed in the lower locking finger 5|,for holding the fingers 5|) and 5| in locked position When engaged orseated in the locking notches B3 and 64 in said locking face plate 62attached to the edge N5 of the door jam 2.

A stop spur 16 will be struck from the side plate 4| and pushedinwardly, serving to limit the rotary movement of the cam actuatingmember 6| for preventing full rotation of the same. The springs 39 and40 disposed about the rods or wires 35 and 36 next to the follower heads3| and 32 will cause the locking fingers 5|] and 5| to which they areattached, to be normally and resiliently moved into locked position.

From the foregoing description, it will be apparent that there has beendevised and provided a highly efiicient form of door latch and lockmechanism which will be automatically operated by rotation of the doorknobs in either direction, and which may be secured inlocked positionbymeans of any suitable key placed within;the key hole 69 providedtherefor-and brought into engagement with the feet 69" in the-lockingvdetent 4 10 which will then be rotated to overlie the pin I4, thusholding said latch and lock mechanism secure.

While the preferred embodiment of the instant invention has beenillustrated and described, it will be understood that it is not intendedto limit the scope of the invention thereto, as many minor changes indetail of construction may be resorted to without departure from thespirit of the invention.

Having described the invention, what is claimed as new is:

1. In combination with a door and latch and lock mechanisms thereforincluding a lock mechanism housed in the edge of said door midway of itslength, latch mechanisms housed in the'edge of said door above and belowsaid lock mechanism, a spindle-for said lock mechanism, door knobs onthe ends of said spindle, pivoted locking fingers adjacent said spindlehaving rsiliently tensioned means connected with said latch mechanisms,an operating cam engageable with said locking fingers, and meanssupported by said spindle engageable with said operating cam forsimultaneously operating said lock and latch mechanisms.

2. In combination with a door and frame jamb therefor, of latch and lockmechanisms disposed in the edge of said door in spaced relation, 2.spindle for said lock mechanism, door knobs on the opposite endsthereof, pivoted locking fingers in said lock mechanism, ball latchesfor said latch mechanism, follower heads for projecting said balllatches and operating rods between said looking fingers and saidfollower heads whereby the same will be simultaneously operated upon therotation of said spindle in either direction.

3. In combination with a door and frame jamb therefor, of a latch andlock mechanisms therefor disposed in the edge of said door in spacedrelation, a spindle for said lock mechanism, door knobs on the oppositeends thereof, pivoted locking fingers in said lock mechanism, balllatches for said latch mechanism, follower heads for pro jecting saidball latches and operating rods between said locking fingers and saidfollower heads whereby the same will be simultaneously operated upon therotation of said spindle in either direction, said locking fingers andball latches being adapted to engage apertured keeper plates.

'4. In combination with a door and latch and lock mechanisms thereforincluding a lock mechanism housed in the edge of said door midway of itslength, latch mechanisms housed in the edge of said door above and belowsaid lock mechanism, a spindle for said lock mechanism, door knobs onthe ends of said spindle, pivoted looking fingers including an arcuatelycurved portion adjacent said spindle having resiliently tensioned meansconnected with said latch mechanisms, an operating cam ridable on theinner arcuate surface of said lock fingers, and a second cam supportedby said spindle engageable with said operating cam for simultaneouslyoperating said lock and latch mechanisms.

5. In combination with a door and frame j amb therefor, of latch andlock mechanisms disposed in the edge of said door in spaced relation, aspindle for said lock mechanism, door knobs on the opposite endsthereof, pivoted lockin fingers in said lock mechanism, ball latches forsaid latch mechanism, metal liners in said latch mechanisms, tensionedfollower heads for projecting said ball latches and operating rodsbetween said locking fingers and said follower heads whereby the samewill be simultaneously operated upon the rotation of said spindle ineither direction.

6. The combination of claim 5 wherein said liners and follower headsform angled bearing surfaces seating the ball latches therein.

7. The combination of claim 6 wherein said tension means are coilsprings between said liners and follower heads and said rods terminatein said follower heads for actuating them into latching or unlatchingposition.

8. In combination with a door and frame jamb therefor, a lock housin insaid door, said lock housing including side plates and an apertured faceplate, a spindle extending through said housing, pivoted latchingfingers secured in said housing extending through said apertured faceplate and adapted to engage with a keeper, means actuated by saidspindle pivoting said fingers into operation, latch means mounted inspaced relation on said door, operatin rods connecting said pivotedlatch fingers and said latch means, and door knobs on the end of saidspindle actuating said fingers to open and close the door.

9. In combination with a door and frame jamb therefor, a lock housing insaid door, said lock housing including side plates and an apertured faceplate, a spindle extending through said housing, pivoted latchingfingers secured in said housing extending through said apertured faceplate and adapted to engage with a keeper, an operating cam engageablewith said fingers, means supported by said spindle engageable with saidoperating cam, latch means mounted in spaced relation on said door,operating rods connecting said pivoted latch fingers and said latchmeans, and door knobs on the end of said spindle 6 actuating saidfingers to open and close the door.

10. In combination with a door and frame jamb therefor, a lock housingin said door, a spindle extending through said housing, pivoted latchingfingers secured in said housing, an operating cam engageable with saidfingers, means supported by said spindle engageable with said operatingcam, latch mechanisms including ball latches and follower headsprojecting said ball latches, operating rods connecting said pivotedlatch fingers and said follower heads, and door knobs on the end of saidspindle actuating said fingers to open and close the door.

11. The combination of claim 10 wherein said latch mechanisms includesliners and tension means retained between said liners and follower headsurging said ball latches into latching position, said liners andfollower heads having angled bearing surfaces seating the ball latchestherein.

12. The combination of claim 10 wherein said operating rods are securedin said follower heads and extend into said locking fingers to operatesaid ball latches when said fingers are pivoted.

ARTHUR NEWELL.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNI ED STATES PATENTS Num er Name Date 582,741 Holimann May 18, 18971,240,403 Amato Sept. 18, 1917 1,294,399 Chappelle Feb. 18, 19191,495,820 Tierney May 27, 1924 1,639,862 Shilling et al Aug. 23, 19272,169,692 Hansen Aug. 15', 1939

